Posts Tagged ‘contact dermatitis’

Generic Name
Clonidine (KLAH-nih-dene)
Brand Names
Catapres-TTS-2
Catapres-TTS-1    Catapres-TTS-3
Type of Drug
Alpha receptor stimulant.
Prescribed For
High blood pressure, including hypertensive emergency (diastolic blood pressure over 120); also used for excess sweating, childhood growth delay, attention-deficit hyperactivity disorder (ADHD), Tourette’s syndrome, restless leg syndrome, schizophrenic psychosis, migraine, ulcerative colitis, painful or difficult menstruation, hot flashes related to menopause, diagnosis of pheochromocytoma (adrenal-gland tumor), kidney poisoning associated with cyclosporine, diabetic diarrhea, smoking cessation, methadone and opiate detoxification, withdrawal from alcohol and benzodiazepines such as Valium, nerve pain following herpes attack, and allergic reactions in the presence of asthma triggered by external sources.
General Information
Clonidine stimulates nerve endings in the brain called alphaadrenergic receptors. It reduces blood pressure by dilating (widening) blood vessels. Clonidine works quickly, decreasing blood pressure within 1 hour. The other uses of clonidine relate to its stimulation of alpha receptors in the body.
Cautions and Warnings
Do not take clonidine if you are allergic or sensitive to any of its ingredients.
People who have had a stroke or recent heart attack or who have cardiac insufficiency or chronic kidney failure should avoid taking clonidine.
Some people develop a tolerance of their clonidine dosage. If this happens, your blood pressure may increase and your doctor may prescribe a higher dose.
Never stop taking clonidine without your doctor’s knowledge. If you abruptly stop taking clonidine, you may experience an unusual increase in blood pressure accompanied by agitation, headache, nervousness, and severe reactions, possibly death. Restarting clonidine therapy or taking another antihypertensive can reverse these effects.
Clonidine may cause degeneration of the    See your eye doctor for regular GheCk Ups lfiyou are taking this drug.
); you require surgery, your doctor will continue your clonidine therapy until about 4 hours before surgery and resume it as soon as possible afterward.
People who develop skin sensitivity (symptoms include rash, itching, and swelling) to Catapres-TTS, the transdermal patch form of clonidine, may experience the same reactions with oral clonidine.
Possible Side Effects
Tablets
♦    Most common: dry mouth, drowsiness, dizziness, constipation, and sedation.
♦    Common: headache and fatigue. These effects tend to diminish within 4-6 weeks.
•    Less common: appetite loss, swelling or pain in the glands of the throat, nausea, vomiting, weight gain, blood-sugar elevation, breast pain or enlargement, worsening of congestive heart failure, heart palpitations, rapid heartbeat, painful blood-vessel spasm, abnormal heart rhythms, electrocardiogram changes, feeling unwell, changes in dream patterns, nightmares, difficulty sleeping, hallucinations, delirium, anxiety, depression, nervousness, restlessness, rash, hives, thinning or loss of scalp hair, difficult or painful urination, nighttime urination, retaining urine, decrease or loss of sex drive, weakness, muscle or joint pain, leg cramps, increased alcohol sensitivity, dryness and burning of the eyes, dry nose, loss of color, and fever.
Transdermal Patch
✓    Most common: dry mouth and drowsiness.
✓    Less common: constipation, nausea, changes in sense of taste, dry throat, fatigue, headache, lethargy, changes in sleep patterns, nervousness, dizziness, impotence, sexual difficulties, and mild skin reactions including itching, swelling, contact dermatitis, discoloration, burning, peeling, throbbing, white patches, and generalized rash. Rashes of the face and tongue have also occurred but cannot be specifically tied to transdermal clonidine.
Drug Interactions
•    Combining clonidine and a beta-adrenergic blocker may increase the severity of a drug-withdrawal reaction and rebound high MW pressure. This reaction may be very serious.
•    Combining verapamil and clonidine may lead to very low blood pressure and atrioventricular (AV) block (abnormality in heartbeat patterns). This reaction may be very serious.
O    Avoid alcohol, barbiturates, and sedatives because they increase the depressive effects of clonidine.
•    Tricyclic and other antidepressants, appetite suppressants, estrogens, stimulants, indomethacin and other nonsteroidal anti-inflammatory drugs (NSAIDs), and prazosin may counteract the effects of clonidine.
•    clonidine may reduce the therapeutic effects of levadopa +
carbidopa.
Food Interactions
The tablets are best taken on an empty stomach but may be taken with food if they upset your stomach.
Usual Dose
Tablets
Adult: high blood pressure-100 mcg twice a day to start; may be raised by 100 mcg a day until maximum control is achieved. Take no more than 2400 mcg a day. Other uses-100-goo mcg a day, or up to 0.8 mcg per lb. of body weight in divided doses. Seniors should start with a lower dose and increase more slowly.
Child: 50-400 mcg orally twice a day.
Transdermal Patch
Adult: 100 mcg delivered daily from a patch applied once every 7 days. Up to two 300-mcg patches may be needed to control blood pressure. Transdermal dosage exceeding 600 mcg a day has not been shown to increase effectiveness.
Child: not recommended.
Overdosage
Symptoms of overdose are slow heartbeat, central- nervous-system depression, very slow breathing, low body temperature, pinpoint pupils, seizures, lethargy, agitation, irritability, nausea, vomiting, abnormal heart rhythms, mild increases in blood pressure followed by a rapid drop in blood pressure, dizziness, weakness, loss of reflexes, and vomiting. Victims should be taken to a hospital emergency room immediately. ALWAYS bring the prescription bottle or container.
Special Information
Gk’3t1161)e causes drowsiness in about 1/3 of people who take it. Be extremely careful while driving or performing any task that requires concentration. This effect is prominent during the first few weeks of clonidine therapy and then tends to decrease.
Do not take over-the-counter cough and cold medications unless directed by your doctor.
Call your doctor it you become depressed or have vivid dreams or nightmares while taking clonidine, or if you develop swelling in your feet or legs, paleness or coldness in your fingertips or toes, or any persistent or bothersome side effect.
Apply the transdermal patch to a hairless area of skin such as the upper arm or torso. Use a different skin site each time. If the patch becomes loose, apply the supplied adhesive directly over it. If the patch falls off before 7 days are up, apply a new one. Do not remove the patch while bathing.
If you forget a dose of oral clonidine, take it as soon as possible and then go back to your regular schedule. If you miss 2 or more consecutive doses, consult your doctor; missed doses may cause blood pressure increases and severe adverse effects. Do not take a double dose.
Special Populations
Pregnancy/Breast-feeding: Clonidine passes into the fetal bloodstream. Animal studies show that clonidine may damage the fetus in doses as low as 1/3 the maximum dose. When this drug is considered crucial by your doctor, its potential benefits must be carefully weighed against its risks.
Clonidine passes into breast milk. Nursing mothers who must take this drug should use infant formula.
Seniors: Seniors are more susceptible to the effects of this drug and should begin with lower doses.

Generic Name
Clopidogrel (kloe-PID-oe-grel) nQ
Brand Name  Plavix
Type lul Drug Antiplatelet.
Prescribed For
Heart attack and stroke prevention; also used for blood thinning after placement of a vascular stent.
General Information
Artery-clogging blood clots are often the cause of heart attacks and strokes. clopidogrel reduces the risk of both by helping prevent blood-clot formation. This drug thins the blood by making platelets—the cells that aggregate to form clots—less “sticky.” It starts working in as little as 2 hours after taking a single tablet. The drug’s blood-thinning effect lasts until inactivated platelets are replaced by the body. Studies suggest that clopidogrel is more effective than aspirin in preventing heart attack and stroke in people at risk. People taking clopidogrel after scent surgery usually take it for a relatively short period. Those taking it to prevent a heart attack or stroke must take it for life.
Cautions and Warnings
Do not take clopidogrel if you are allergic or sensitive to any of its ingredients or to ticlopidine, a related antiplatelet. These drugs can rarely cause a rapid drop in white-blood-cell count.
People with bleeding ulcers, brain hemorrhages, or other bleeding problems should use clopidogrel with caution.
Thrombotic thrombocytopenic purpura (TTP) is a rare but serious complication of clopidogrel, sometimes reported after less than 2 weeks of treatment. See your doctor right away if you develop a sudden fever, unusual bruising, nosebleeds, bleeding gums, or any other unusual symptoms. TTP reduces your platelet count, interfering with blood clotting, and affects white-blood-cell count.
People with liver problems should use clopidogrel with caution.
Possible Side Effects
✓    Most common: rash and other skin problems.
✓    Common: chest pain, accidents, flu-like symptoms, pain, headache, dizziness, abdominal pain, upset stomach, joint pain, back pain, black-and-blue marks, and respiratory infection.
✓    Less common: tiredness, Swollen arms or legs, high blood pressure, diarrhea, nausea, bleeding, nosebleeds, breathing difficulties, runny nose, coughing, bronchitis, high blood cholesterol, urinary infection, and depression.
✓    Rare: bleeding in the brain and stomach ulcer. Contact your doctor if you experience any side effect not listed above.
Drug Interactions
•    Clopidogrel may interfere with the body’s ability to break down fluvastatin, nonsteroidal anti-inflammatory drugs (NSAIDs), phenytoin, tamoxifen, tolbutamide, torsamide, and
warfann.
•    Combining clopidogrel and NSAIDs may increase blood loss and bleeding in the stomach and intestines.
•    Do not combine clopidogrel and other antiplatelet drugs or
the anticoagulant (blood thinner) warfarin unless you are
under your doctor’s direct supervision. This interaction may
prevent normal blood clotting and lead to severe bleeding
problems.
Food Interactions
Clopidogrel may be taken without regard to food or meals.
Usual Dose
Adult: 75 mg a day.
Overdosage
Little is known about the effects of clopidogrel overdose aside from reduced blood clotting. Overdose victims should be taken to a hospital emergency room. ALWAYS bring the prescription bottle or container.
Special Information
Minor cuts may take longer to stop bleeding during treatment with clopidogrel. If you are having surgery, make sure your doctor knows you are taking clopidogrel. You may have to stop taking the drug I week before surgery.
If you forget a dose, take it as soon as you remember. If it is almost time for your next dose, skip the forgotten dose and continue with your regular schedule.
Special Populations
Pregnancy/Breast-feeding: The safety of using clopidogrel during pregnancy is not known. Other antiplatelet drugs, tike aspirin, are not used during pregnancy due to their possible effects on Mrjlher and fetus. When this drug is considered crucial by your doctor, its benefits must be carefully weighed against its risks.
Clopidogrel may pass into breast milk. Nursing mothers who must take this drug should use infant formula.
Seniors: Seniors may take this drug without special precaution.

Generic Name
Clorazepate (klor-AZ-uh-pate) 99
Brand Names
Gen-Xene    Tranxene-SD
Tranxene    Tranxene T-Tab
Type of Drug
Benzodiazepine sedative.
Prescribed For
Anxiety, tension, fatigue, and agitation; symptoms of acute alcohol withdrawal; partial seizures; also prescribed for irritable bowel syndrome and panic attacks.
General Information
Clorazepate dipotassium is a benzodiazepine. Benzodiazepines directly affect the brain. They can relax you and make you more tranquil or sleepier, or they can slow nervous system transmissions in such a way as to act as an anticonvulsant. Many doctors prefer benzodiazepines to other drugs that can be used to similar effect because they tend to be safer, have fewer side effects, and usually work as well, if not better.
Cautions and Warnings
Do not take clorazepate if you are allergic or sensitive to any of its ingredients or to another benzodiazepine drug, including clonazepam.
Clorazepate can aggravate narrow-angle glaucoma, but you may take it if you have open-angle glaucoma and are receiving therapy for it.
Other conditions in which clorazepate should be avoided are: severe depression, severe lung disease, sleep apnea (intermittent cessation of breathing during sleep), liver disease, drunkenness, and kidney diseaap_, to inOn of these conditions, the qq)NSSvve effects of clorazepate may be enhanced or could be detrimental to your overall condition.
Clorazepate should not be taken by psychotic patients because it is not effective for them and can trigger unusual excitement, stimulation, and rage.
Clorazepate is not intended to be used for more than 3-4 months at a time. Your doctor should reassess your condition before continuing your prescription beyond that time.
Clorazepate may be addictive. It should be used with caution in people with a history of drug dependence.
Drug withdrawal may develop if you stop taking it after as few as 4 weeks of regular use but is more likely after longer use. It may start with anxiety and progress to tingling in the hands or feet, sensitivity to bright light, sleep disturbances, cramps, tremors, muscle tension or twitching, poor concentration, flu-like symptoms, fatigue, appetite loss, sweating, and changes in mental state. Your dosage should always be reduced gradually to prevent drug withdrawal symptoms.
Possible Side Effects
Weakness and confusion may occur, especially in seniors and in those who are more sickly.
✓    Most common: mild drowsiness during the first few days of therapy.
✓    Less common: confusion, depression, lethargy, disorientation, headache, inactivity, slurred speech, stupor, dizziness, tremors, constipation, dry mouth, nausea, inability to control urination, sexual difficulties, irregular menstrual cycle, changes in heart rhythm, low blood pressure, fluid retention, blurred or double vision, itching, rash, hiccups, nervousness, inability to fall asleep, and occasional liver and kidney dysfunction. If you have any of these symptoms, stop taking the medicine and contact your doctor immediately.
✓    Rare: Rare side effects can affect your heart, stomach and intestines, urinary tract, blood, muscles and joints. Contact your doctor if you experience any side effects not listed above.
Drug Interactions
•    Clorazepate is a central-nervous-system depressant. Don’t mix it with alcohol, other sedatives, narcotics, barbiturates, monoamine oxidase inhibitor and other antidepressants, and antihistamines. Taking Clorazepate with these drugs may result in excessive depression, tiredness, sleepiness, breathing difficulties, or related symptoms.
•    Smoking may reduce clorazepate’s effectiveness by in-
creasing the rate at which it is broken down by the body.
•    Clorazepate’s effects may be prolonged when it is mixed with cimetidine, contraceptive drugs, disulfiram, fluoxetine, isoniazid, ketoconazole, metoprolol, probenecid, propoxyphene, propranolol, rifampin, or valproic acid. Theophylline may reduce clorazepate’s sedative effects.
•    If you take antacids, separate them from your clorazepate dose by at least 1 hour to prevent them from interfering with the absorption of clorazepate into the bloodstream.
•    Clorazepate may increase blood levels of digoxin and the chances of digoxin toxicity.
•    The effect of levodopa + carbidopa may be decreased if it is taken together with clorazepate.
•    Combining clorazepate with phenytoin may increase phenytoin blood concentrations and the chances of phenytoin toxicity.
Food Interactions
Clorazepate is best taken on an empty stomach, but it may be taken with food if it upsets your stomach.
Usual Dose
Immediate-Release
Adult and Child (age 9 and over): 15-60 mg daily. The average dose is 30 mg in divided quantities, but dosage must be adjusted to individual response for maximum effect. Maximum recommended daily dose is 90 mg. For treatment of anxiety, clorazepate may be taken as a single dose at bedtime.
Child (under age 9): not recommended.
Sustained-Release
Adult: The sustained-release form of clorazepate may be given as a single dose, either 11.25 or 22.5 mg, once every 24 hours. Sustained-release tablets are not recommended for the initial dosage.
Child: not recommended.
Overdosage
Symptoms of overdose are confusion, sleepiness, poor coordination, lack of response to pain such as a pin prick, loss of reflexes, shallow breathing, low blood pressure, and coma. The victim should be taken to a hospital emergency room. ALWAYS bring the prescription bottle or container.
Special Information
Clorazepate can cause tiredness, drowsiness, inability to concentrate, or similar symptoms. Be careful if you are driving, operating machinery, or performing other activities that require concentration.
People taking clorazepate for more than 3 or 4 months at a time may develop drug withdrawal reactions if the medication is stopped suddenly (see “Cautions and Warnings”). Do not stop taking clorazepate or increase or decrease your dosage without first consulting your doctor.
If you forget a dose of clorazepate, take it as soon as you remember. If it is almost time for your next dose, skip the dose you forgot and continue with your regular schedule. Do not take a double dose.
Special Populations
Pregnancy/Breast-feeding: Clorazepate may cause birth defects if taken during the first 3 months of pregnancy. Avoid this drug if you are or might be pregnant.
Clorazepate may pass into breast milk. Nursing mothers who must take clorazepate should use infant formula.
Seniors: Seniors, especially those with liver or kidney disease, are more sensitive to the effects of clorazepate and generally require smaller doses to achieve the same effect.

Few drugs create quite so much alarm as corticosteroids. To some extent, this alarm is justified — if

over-used, they have dangerous side effects. But rejecting them entirely is a great mistake, because

they are safe at the right dose, and immensely useful for a variety of allergic symptoms. With the

information given here, you can use steroids as safely and effectively as possible.
Although their proper name is corticosteroids, these drugs are commonly — and rather inaccurately —

called steroids. This name adds to their doubtful reputation by confusing them with the notorious

anabolic steroids (see box on p. 142). However, the term ’steroids’ is used for corticosteroids in this

book, simply because that is the name most people recognise.
Steroids do not deal with the allergic reaction itself, unlike antihistamines (see p. 138) or

cromoglycate (see p. 148). Instead, they tackle the consequences of the allergic reaction,

inflammation.
What exactly is inflammation? The visible features of this phenomenon – for example, if it occurs in

the skin, around a scratch or cut – are redness and slight swelling. There is also soreness, and some

warmth. All these effects are produced by an influx of immune cells, intent on protecting the broken

skin from infection. These immune cells generate messenger chemicals (see box on p. 10) which boost the

inflammation, as well as attracting yet more immune cells to the area. When inflammation affects

delicate membranes, as when you suffer a sore throat for example, there can be a great deal more

swelling and discomfort.
The inflammation that follows allergic reactions is very similar to that provoked by infection,

although the balance of immune cells and messenger chemicals is slightly different. Eosinophils (see p.

19) play a particularly important role in sustaining the inflammation produced by allergies.
This influx of eosinophils and other immune cells, which lights the fires of inflammation, occurs some

hours after the allergic response itself. It is known as the Late Phase Reaction (see p. 13). Steroids

work well for allergies because they curtail the Late Phase Reaction and have a calming effect on

various immune cells, especially the eosinophils.
Steroid phobia
So many patients have a profound objection to taking steroids that doctors call it, half-jokingly,

’steroid phobia’. One of the hazards of giving information about potential side effects – as in this

book – is that it may encourage ’steroid phobia’. That would be a tragedy, because steroids really are

useful drugs that can do you a lot of good and very little harm, if used correctly. The risks are very

small when the steroids are used at low to medium doses, and targeted directly onto the inflammation.

Even with high doses, the serious side effects can generally be avoided. Please don’t use the

information here to scare yourself – instead, use it to protect yourself while getting the most from

steroid treatment.
A few effects on other body processes remain, even with the new steroids:
•    Raised blood pressure – this can occur even with short-term use of steroids.
•    Children may stop growing, or grow more slowly. Usually they make up for this later.
•    Quite commonly, there is increased hunger (though you don’t actually need more food, and will

put on weight if you eat more than usual). Insomnia and an agitated, edgy feeling during the day may

occur. These are minor side effects, and no cause for concern.
•    Side effects in the eye can occur: there is an increased risk of glaucoma and, with prolonged

use, cataracts.
•    Long-term use can also result in loss of minerals from the bones, leading to thinning and

fragility (osteoporosis).
•    Psychological changes may occur. Some people experi- ece euphoria or greatly increased energy

levels – with the opposite effects occurring when the course of steroids ends. At worst, steroids can

trigger paranoia or severe depression and suicidal feelings. (These effects are more likely to occur in

those with a history of mental illness. If you are concerned about this aspect, discuss the possible

risks with your doctor before taking steroid tablets.)
•    Epileptics may suffer more frequent or more severe seizures.
•    Very rarely, stomach ulcers develop, or other side effects in the digestive system.
•    The skin may become thin, and the small blood vessels beneath it more fragile, leading to easy

bruising and stretch marks (striae). This is also a potential problem with steroid creams (see p. 146).

Elderly patients are much more susceptible to this side effect.
•    Some diabetics need more insulin. in addition, anyone with the potential to develop diabetes is

more likely to do so, but only if taking steroid tablets long term. The diabetes usually goes when the

steroids are stopped.
•    A few men suffer impotence, but only with long-term use of tablets. This can be treated, so see

your doctor. Women may have irregular periods.
•    Damage to the hip bones may rarely occur, usually with excessive doses of steroid tablets. This

is called avascular necrosis and may require hip replacement.
In addition to these effects on other body processes, there are also some side effects that arise from

the steroids’ suppression of the inflammation. These can occur even with short courses. Again, however,

these problems can almost always be prevented, or treated, or reversed if detected at an early stage.
•    Skin wounds may be slow to heal, and are more likely to become infected because of reduced

immunity. This is not a serious problem – just keep all cuts as clean as possible.
•    Infections by viruses and fungi (e.g. Candida – see box on p. 83), may occur more readily.
•    Some infections may be masked initially because fever is suppressed by the steroids.
•    Chickenpox and measles can be far more serious – even fatal – if steroid tablets are being

taken, or have been taken for more than three weeks within the last three months. This is something to

be very careful about (see item 15 on p. 143).
•    Prolonged use can increase the risk of chest infections.
•    Vaccination with live vaccines can cause problems.
•    Older people who once suffered from tuberculosis (TB) may find it comes back.
•    Steroids can lead to pregnancy if using an IUD, because IUDs work by inducing mild inflammation

in the womb.
The most insidious effect of steroids – and remember again that this is only a hazard of prolonged

high-dose treatment – is adrenal suppression. When steroid tablets are taken for more than three weeks,

the adrenal glands’ own ability to produce cortisol (see p. 141) starts to be slightly suppressed. The

longer the course of steroids, the greater the effect. Stopping the steroids abruptly leaves the body

without enough cortisol to protect itself, which, in the very worst cases, can lead to collapse. Less

obviously, there may be greater vulnerability to the effects of accidents, serious illnesses, surgery

or childbirth – demanding events that would normally stimulate a rise in cortisol production to help

the body cope with the stress.
If you take a short course of steroid tablets during this period, there is more risk of side effects

than normal. Adrenal suppression can last for 6-12 months after steroid treatment ends. It may be two

years before the body can cope with surgery unaided and you will need low doses of steroids to get you

through stress of this kind.
Will I look like a weight-lifter?
Absolutely not. The steroids taken by unscrupulous athletes to pump up their muscles artificially are

anabolic steroids. They are entirely different from the corticosteroids used to treat allergies.
Mimicking nature
All corticosteroids are chemically very similar to a substance known as cortisol that is produced

naturally by the body. Cortisol – which is a hormone made in the adrenal glands, located near the

kidneys – has a great number of different effects, apart from damping down inflammation. It regulates

the action of the kidneys, moves proteins out of the muscles and bones, and alters the pattern of fat

distribution.
Like other hormones and chemical messengers that the body produces, cortisol achieves its effects by

binding to receptors on target cells (e.g. immune cells, muscle cells and the cells that make up the

kidneys). These receptors vary a little, which gives researchers scope for making a synthetic version

of the hormone, cunningly modified so that it binds well to one kind of receptor (the one on the immune

cells, for example) but not so well to another (the one on the kidneys).
Hydrocortisone, the original steroid drug, is identical to cortisol, but the newer steroids have been

modified chemically to have the maximum effect on inflammation and minimal effects on other body

processes. While hydrocortisone can only be used for allergies at very low doses (as in

non-prescription hydrocortisone cream), the modified steroids can be used at higher doses.
The side effects of steroid drugs are of two basic kinds:
•    those due to suppression of inflammation (the desired effect of the drugs) because this

partially reduces immunity to disease
•    those due to the effects of steroids on other body processes – undesirable effects which have,

as far as possible, been designed out of the modern drugs.
These different side effects are discussed in more detail on p. 142. First, it is important to look at

the crucial difference between taking steroids in tablet form and applying them directly to the

affected area. Much unnecessary anxiety can be avoided by understanding this difference.
Targeting steroids
The risks of steroids fall dramatically if, instead of taking them in tablet form, you put them exactly

where they are needed: that means drops for the nose or eyes, inhalers to get the drug into the

airways, or creams and ointments to target the skin.
The medical term for this is topical application, and it is infinitely preferable to taking steroid

tablets. When a drug is swallowed, it does its job by being absorbed through the stomach lining into

the bloodstream, and then being carried around the body in the blood. This is called systemic treatment

because it reaches the whole body-system via the blood.
The areas that need the drug – the itchy skin or inflamed airways – get their dose, but so does every

other part of the body. In order to get a useful amount to the afflicted parts, a fairly large total

dose has to be taken which inevitably affects the rest of the body, making the drug far more hazardous.
When a drug is targeted precisely, in sprays, drops, creams or inhalers, the dose used can be very much

smaller. Some of the drug does get into the bloodstream, by penetrating the skin or the membranes of

the nose or airways, and entering the tiny blood vessels that lie just below. But the amount reaching

the bloodstream is usually minuscule compared with the amount in the blood when you take steroid

tablets. Systemic side effects –those due to the drug going round in the blood (see below) – are

usually avoided, although there may be some local side effects, where the drug is applied.
Only with very powerful doses – as in the steroid inhalers used for severe asthma, or high-potency

creams for eczema – do topical steroids reach the bloodstream in sufficient amounts to cause systemic

side effects. You have to be on these treatments for a long time, or be overdoing the dose (a possible

hazard with creams for eczema), to run the risk of systemic side effects.
Steroid tablets
Short courses of steroid tablets – which means three weeks or less – are pretty safe. They are usually

sufficient to get the inflammation under control, and can be taken three or four times a year without

creating any problems.
Even if you have no choice but to take steroid tablets on a long-term basis, remember that the serious

side effects can usually be avoided, or reversed if caught early (see p. 143).
Side effects
Apart from changes that may (rarely) occur in the stomach lining, the side effects of steroid tablets

are all systemic side effects.
In the early days of steroid use, a set of side effects that resemble a disease known as Cushing’s

Syndrome were frequently seen. The side effects included deposits of fat on the shoulders and abdomen,

and around the face, producing a ,moon face’, water retention resulting in puffiness, weakening of the

bones, easy bruising, acne and muscle wasting. All these changes are due to the unwanted effects of

steroids on other body processes, not to any effect on inflammation.
With the new and improved steroids (see left), plus a much more watchful approach by doctors, these

severe side effects have become very rare, but they can still occur in those on high-dose steroid

tablets. As long as they are noticed in good time (see p. 143) the problem can be reversed.
Using steroid tablets safely
Those taking steroid tablets for more than three weeks, or taking a lot of short courses, can protect

themselves from serious side effects in the following ways:
1. Weigh yourself every day. Should your weight suddenly start to rise, despite eating normally,

consult your doctor: this may be a sign of water retention.
2. If you develop hip pain, swollen ankles, muscle weakness or acne tell your doctor.
3. Get your blood pressure checked regularly by the doctor.
4. Get your eyes checked regularly by an optician, who can detect any problems before there is

irreversible damage.
5. In the case of children, make sure the child’s growth is being monitored carefully by the doctor.
6. Stay as active as possible, with plenty of vigorous exercise, to protect against osteoporosis. Avoid

getting too thin, as this is also a risk factor for osteoporosis. Reduce your salt intake and don’t

drink too much alcohol. Ask your doctor to order a bone-density measurement periodically. Following the

menopause, women on steroid tablets should consider taking hormone replacement therapy (HRT) as this

protects against osteoporosis.
7. Persistent unexplained back pain must be reported to your doctor: this can be a sign of

osteoporosis. If you fracture your wrist in a fall (a Colles’ fracture) make sure your doctor knows

about this, and prescribes urgent drug treatment for osteoporosis.
8. See your doctor if you are over-tired, thirsty, or need to pass urine much more frequently – these

can sometimes be signs of diabetes.
9. Take your tablets after food to protect the stomach. See your doctor if you have persistent

indigestion: coated forms of the tablets may help.
10. If you ever produce black, tarry stools, call your doctor immediately. This is generally a sign of

bleeding from the digestive tract.
11. With your doctor’s permission, take all your daily steroids as a single dose in the morning. The

long gap between one dose and the next stimulates the body to maintain its own steroid-making abilities

and so reduces the risk of adrenal suppression. It can also protect against growth problems in

children. Even greater protection comes from taking steroids on alternate days – one day on, one day

off – although not everyone can keep their symptoms under control with this regime. Obviously, you must

consult your doctor before you try. Your dose may need adjusting.
12. Adrenal suppression puts you at risk during any medical procedure. Tell your doctor, dentist, and

anyone treating you in an emergency – even if you stopped taking steroids up to two years earlier. You

should also carry a Steroid Card at all times, in case you are unconscious. These cards are available

from your doctor.
13. Ask the doctor what you should do if you develop any kind of infection or suffer an accident. It is

often necessary to increase the dose of steroid tablets.
14. Tell your doctor if you have ever had tuberculosis, as this can recur.
15. If you or your child have not had measles or chickenpox, avoid contact with anyone suffering from

these diseases – or from shingles (herpes zoster) which is caused by the chickenpox virus. See your

doctor promptly if there is any contact with someone infected. Emergency treatment to combat the virus

must be started promptly.
16. When being vaccinated, remind the doctor or nurse that you are taking steroid tablets.
17. Never stop taking steroid tablets abruptly if you have been taking them for more than three weeks,

as some degree of adrenal suppression may already have begun. Your body needs time to recover its

natural level of activity, so reduce the dosage gradually. Get precise instructions from your doctor

about how to do this.
18. If you are asthmatic, at the end of any course of steroid tablets lasting more than three weeks, be

extra careful about exposure to allergens and asthma triggers. You may be more vulnerable to severe

asthma attacks for as much as a year after long-term steroid tablets are stopped, or the dosage

reduced.
Watch out for adrenal suppression
If you develop any of the following symptoms after stopping steroids,
or while reducing the dose, call your doctor as soon as possible:
•    muscle weakness; muscle and joint pain
•    feeling ‘under the weather’
•    mental changes
•    scaly or flaking skin
•    breathlessness
•    lack of appetite; or nausea and vomiting
•    fever and weight loss
•    painful itchy lumps on the skin.
Note that, very rarely, withdrawal of steroid tablets, or lowering the dose, can unmask a disease

called Churg-Strauss Syndrome (see p. 160).
Steroid nose drops and sprays
Most steroid nose drops and nasal sprays contain very low doses of the drug, and produce no significant

side effects when used for short periods of time. The safety of these preparations is such that several

are available without prescription.
Steroid drops and sprays for the nose are a very effective way of treating hayfever and perennial

allergic rhinitis. They can be used after the symptoms have begun, or in advance of encountering the

allergen.
Steroid nose drops are also useful in reducing the size of nasal polyps (see p. 30) but only if the

drops are inserted correctly. Kneel down and, bending your neck forward as much as possible, put the

crown of your head on the floor. Now put the drops in and stay in this position for several minutes

while the drops reach their target. Once the polyps have shrunk, the drops can be replaced by a steroid

spray which will keep them under control.
Always stick to the stated dose, as with any drugs – don’t use the drops or spray more often than you

should. If you have a cold or other infection in the nose, stop using steroid drops and sprays until it

is better. Following surgical operations on the nose, ask your doctor’s advice before using steroid

drops or sprays.
Side effects
Minor short-term side effects may include dryness and irritation in the nose and throat, and

disturbances of smell and taste. Nosebleeds might occur and should be reported to your doctor. When

inserting the drops, try to keep them away from the central partition of the nose (the septum), as this

is
the part most vulnerable to bleeding. If you are a long-term user of steroid nose drops, your doctor

should check the membranes in your nose regularly, to be sure that they are not becoming thinned. Eye

checks may also be advisable with long-term use, as glaucoma can occur.
Allergic reactions to the steroid are possible, and they can cause bronchospasm (contraction of the

airway muscles) though this is unusual. You should obviously stop using the drops and see your doctor

if this occurs.
With very high doses of steroids in the nose, or prolonged treatment, some systemic side effects might

occur. The main cause for concern is children’s growth (see box on p. 145) – their height should be

checked regularly.
Steroid eye drops
Steroid eye drops are sometimes given for severe inflammation of the eye during the hayfever season.

However, the eye is vulnerable to infections if treated with steroid drops, and such treatment requires

close medical supervision.
Side effects
Be extremely careful about infections – don’t rub your eyes with your fingers, for example, or dry

around your eyes with a towel unless it is absolutely clean. Follow your doctor’s instructions very

carefully, and go back immediately if your eyes become more uncomfortable, if redness increases, or if

you have any other cause for concern.
Steroid eye drops are rarely used for more than a few weeks. With prolonged use, there is a risk of two

serious side effects, glaucoma and cataract.
Using two lots of steroid
Allergy sufferers who need steroid nose drops or a nasal spray, as well as a steroid inhaler, often

worry that they are getting too much steroid overall.
In fact there is no cause for concern, unless you are taking very high doses of inhaled steroid, in

which case talk the matter over with your doctor. The amount in most nose drops and sprays is quite

small and the same is true of steroid eye drops. In all cases, relatively little gets into the

bloodstream.
If you have allergies in the nose, this may well be making your asthma worse, and using steroid nose

drops can be very helpful for the asthma symptoms (see p. 39).
Inhaled steroids and children’s growth
If an asthmatic child inhales relatively high doses of steroids for many years, his or her growth can

be stunted. However, only a small number of children need these high doses, and with low to moderate

doses most children’s growth is unaffected. They may experience a short-term slow-down in growth, but

their eventual height should be normal.
Unfortunately, there are a few children whose growth is stunted even by relatively low doses of inhaled

steroids - and it is impossible to predict which children will respond in this way. However, if it is

noticed in good time, and if the steroids can be withdrawn safely, the child’s growth rate will almost

certainly recover.
Your GP or paediatrician should be monitoring your child’s growth. You can also measure this yourself,

and go back to the doctor if you are concerned. Keep the risks in perspective - uncontrolled severe

asthma also stunts children’s growth, as well as endangering the child in far more serious ways, so

don’t stop using the steroid inhaler.
Steroid inhalers
Inhaled steroids are a key part of the modern treatment of asthma (see p. 157). As with other topical

treatments, inhaled steroids are a great deal safer than steroid tablets. However, some of the drug

does get into the bloodstream, and with high-dose inhaled steroids taken for several years, the levels

can be high enough to cause systemic side effects such as osteoporosis (see p. 142).
The dose is the crucial factor here. The packaging or information leaflet that comes with your inhaler

will tell you how much of the drug is delivered with each inhalation. To interpret the information

about side effects correctly, you need to know your total daily consumption of inhaled steroid, and

whether this corresponds to a low, medium or high dose:
•    For budesonide or beclomethasone, two of the more common steroids, less than 400mcg

(micrograms) per day counts as a low dose for adults and children over the age of five. A moderate dose

is 500-800mcg per day, and more than 800mcg a day is a high dose.
•    For fluticasone (Flixotide), halve these figures (i.e. more than 400mcg a day is a high dose).
•    In the case of children under five, all these figures should be halved (e.g. a high dose of

beclomethasone is more than 400mcg a day).
•    For other steroids, check with your pharmacist.
Anyone taking a low or moderate dose has very little to worry about as regards systemic side effects.

Only those inhaling high-dose steroids for many years need feel concerned.
If you may be at risk of systemic side effects, follow the protective measures described for steroid

tablets on p. 143. Apart from growth suppression in children (see box above) the most likely effects

are osteoporosis, adrenal suppression, and a recurrence of tuberculosis.
You can minimise the risk of systemic side effects from
steroid inhalers by swallowing as little as possible of the steroid. Always rinse out your mouth,

gargle, and spit out the water after using your inhaler. Using your steroid inhaler morning and

evening, just before brushing your teeth, will make it much easier to remember to do this.
Bear in mind that inhaling steroids regularly will help you avoid the need for steroid tablets.

Asthmatics who are worried about side effects sometimes skip doses of their inhaled steroids, then find

their asthma is much worse and that they need a course of steroid tablets. Frequent courses of tablets

increase the risk of serious side effects.
Minor local side effects of inhaled steroids include hoarseness and short-lived coughing due to direct

irritation of the throat. These are no cause for concern.
If you are regularly inhaling steroids from a nebuliser, make sure the mask fits really well (see p.

163).
Because steroids reduce the immune defences a little, one common side effect of inhaling them is a

throat infection by Candida (see upper box on p. 83). Oesophageal infections with Candida can also

happen but these are rare; the symptoms are heartburn and indigestion. Gargling with warm water after

each inhalation will help prevent Candida infections. There are also anti-fungal lozenges, if you are

still having trouble.
Keep inhaled steroids away from your lips if you suffer from cold sores (herpes infections around the

mouth). These can be made worse with steroids.
Fortunately, other infections are no more common when using inhaled steroids. This includes chest

infections.
Recent research has found other side effects in children using high doses of inhaled steroids. Cough

and thirst are common, while hoarseness and loss of voice affect quite a few. Behavioural problems also

occur, including hyperactivity, mood swings, excitability, sleep disturbances, depression, and even

hallucinations.
Steroid creams and ointments
Steroid creams and ointments are used for both atopic eczema and contact dermatitis. By delivering the

drug to the place where it is needed, they reduce the dose required to an absolute minimum and, if used

correctly, are very safe. Dr Ernst Epstein, a dermatologist at the University of California, observes

‘All too often I encounter children who are miserable with uncontrolled atopic dermatitis because of

their parents’ unjustified fears of steroid side effects. It is cruel to the child and the family to

forgo topical medication.’
It is very important to use a steroid cream of the right strength. For example, applying a 1%

hydrocortisone cream (available without prescription) to severe atopic eczema will be of no value.

Similarly, only applying a prescribed cream occasionally, or only once a day when the doctor said three

times a day, will mean that the rash never really succumbs to the treatment.
Keeping old tubes of steroid cream in the bathroom cabinet, and using these rather than the newly

prescribed cream, is another frequent mistake. If the earlier prescription was for a weaker steroid

cream, that is not quite up to the job, you won’t get the symptoms under control.
Inadequate treatment means that the rash goes on longer, so you probably apply more steroid in the long

run – which exposes you to a greater risk of local side effects. It is far better to use a moderately

strong steroid cream for a short period of time and get the inflammation fully under control.
Remember that steroid creams are absorbed far more effectively immediately after a bath or shower, so

this is a good time to apply them (see p. 48).
Don’t stop using steroid creams too soon. The skin looks healthy and happy long before it is completely

healed underneath. You must continue until the ‘hidden healing’ has occurred. As a rough guide, the

point when the skin looks good is just the halfway point: so the steroid creams should be continued for

the same length of time again. If it took three weeks to get to the point where the skin looks fine,

then you should go on applying the steroid creams for another three weeks after that.
Generally speaking, it is a good idea to phase out steroid creams slowly, especially after using them

for a long period of time. Stopping abruptly may cause the rash to flare up again –this is called a

rebound effect.
Once you have atopic eczema under good control, you will still need some steroid cream at home for

dealing with relapses. As soon as you notice any rough, itchy skin, apply the cream twice daily for

three days, then once daily for another three days. This should be enough to curb the outbreak of

eczema before it really gets going.
Side effects
To assess the risk of side effects from your steroid cream or oirtment, you need to know how strong it

is. Four grades are recognised: mild (corresponding to non-prescription hydrocortisone cream),

moderately potent, potent and very potent. Ask your doctor or pharmacist which grade corresponds to

your cream, so that you can make sense of the information given below.
Unfortunately, if steroid creams are not used correctly, there are some quite serious local side

effects. Any steroid cream that is strong enough to work is also strong enough to produce side effects

if over-used, so this is a delicate balancing act. The main local side effects are thinning of the skin

and striae (stretch marks). Teenagers and pregnant women are particularly susceptible to stretch marks

if using steroid creams.
It is important to take care because these side effects can be irreversible. The stretch marks, for

example, may fade in time but never entirely disappear. Sustained over-use of steroid creams can

produce permanent thinning of the skin. Thinning of the ski on the face may produce redness, with small

blood vessels shoving through. The fingertips may develop painful cracks.
Note that these side effects can come on very gradually.. Some may be mistaken for symptoms of the

disease itself.
Other local side effects may include an outbreak of spots that look rather like acne. Increased

hairiness or change in skin colour are also possible. Fortunately these effects are reversible.
To avoid side effects, follow the instructions for using steroid creams carefully, and don’t apply too

much or too often. If you have not been given clear instructions by your doctor on the quantity to use,

go back and ask for more information. Ideally, you should actually be shown the correct amount of the

cream to use each time. Remember to wash your fingers after applying steroid creams
If potent or very potent steroid creams are slapped on W& abandon, enough is absorbed into the

bloodstream to produce systemic side effects, comparable to those that can occur with steroid tablets

(see p. 142).
With very potent steroid creams, used for a long period of time, there is some risk of slight systemic

side effects even though the instructions for use are carefully followed. Young children more

susceptible. Bear in mind that covering the skin with cages after applying the cream increases the

amount absorbed into the bloodstream. The degree of adrenal suppression caused by using the cream (see

p. 142) is probably going to remain unnoticed in everyday life, but a major illness, accident,

childbirth or a surgical operation might reveal the problem – so tell medical what you have been using.
Different areas of the body respond differently to steroids creams. The skin of the face, and within

skin folds.
sensitive and generally requires a lower-strength cream, while the palms of the hands and the soles of

the feet require a higher strength. The genitals and the area around the anus are particularly

sensitive, and can become permanently damaged (and then a source of intense discomfort) by strong

steroid creams: some dermatologists recommend using nothing stronger than 1 % hydrocortisone.
Make sure you see your doctor regularly when using steroid creams continuously, especially if:
•    you are using very potent steroid cream
•    you are applying potent or moderately potent steroid cream over more than 20% of your body for

more than a month
•    you are applying potent steroid cream to a baby or young child.
The vehicle – the cream or ointment base in which the steroid is carried – is important because

sensitivity reactions can occur to certain of its ingredients (see p. 45). Eczema sufferers can even

become sensitised to the steroid itself, and this problem is difficult to diagnose because patch tests

with steroids often give false negatives (see box on p. 91). If you are not getting better, ask the

doctor if this could be the explanation. (If a rash gets worse and starts to spread when you begin

using steroid creams, go back and see the doctor very promptly – you may have an infection called

tinea, or ringworm, which flourishes all the more when steroid creams are applied.)
Tacrolimus and pimecrolimus
These are new treatments for atopic eczema. They are not steroids, but are covered here because they

are an alternative to steroid creams and ointments, and if you are comparing the two treatments it may

help to have the information on them side-by-side.
Tacrolimus ointment (brand name Protopic) is for the treatment of moderate to severe atopic eczema, and

pimecrolimus ointment (brand name Elidel) is for milder atopic eczema, especially in children.
These drugs are immunomodulatory rather than immune-suppressive – they adjust the balance of immune

reactions in the
skin. Unlike with steroid creams, there is no risk of thinning the skin, so they can be used on

delicate areas like the face and eyelids.
These treatments are generally used for patients who are not getting better with moisturisers and

steroid creams. Because they cost so much more (about ten times as much as topical steroid treatment),

and since much of the fear of steroid creams is unfounded, doctors are reluctant to prescribe

tacrolimus ointment ,on demand’. With time, the cost of these treatments may fall.
One important advantage of tacrolimus and pimecrolimus ointments is that they may have good effects

that persist after you have stopped using them. And the benefits are cumulative: in one trial where

babies with atopic eczema were treated with pimecrolimus ointment on an as-needed basis, most had fewer

and fewer flare-ups as the months went by. This was not true of babies being treated with steroid

cream.
As with topical steroids, the effect of tacrolimus and pimecrolimus on infections such as

Staphylococcus aureus is surprisingly beneficial: the enormous improvement in the surface structure of

the skin keeps bacteria out. But heavily infected skin should be thoroughly treated with antibiotics

before you start. While using the ointment, watch out for any signs of infection, especially herpes

(see p. 44), and see your doctor immediately.
Minimise your exposure to UV light – in sunlight and sunlamps – because of the tendency of UV to

provoke skin cancers. With the dampening effect that tacrolimus has on the immune system, the risk of

skin cancers may be a little higher.
Don’t apply anything else to the skin (not even moisturisers) within two hours of putting on the

tacrolimus ointment – they dilute the treatment too much. And don’t apply tacrolimus ointment

underneath bandages or other dressings.
Side effects
A few patients find that, while using tacrolimus ointment, skin in areas not being treated actually

gets worse. Talk to your doctor if this happens. Other possible side effects include stinging and

burning when applied, or redness. These are nothing to worry about, and usually lessen with time.
Some common brand names
Common brand names of steroids include:
nose drops – Betnesol, Vista-Methasone
nasal sprays – Beclometasone, Beconase, Flixonase, Nasacort, Nasonex, Rhinocort Aqua, Syntaris eye

drops – Betnesol, Cloburate, Maxidex, Predsol, Vista-Methasone
inhalers – Aerobec, Becloforte, Beclometasone, Becotide, Flixotide, Pulmicort
tablets – Betnesol, Cortisyl, Dexamethasone, Medrone, Prednesol, Prednisolone,
creams – Adcortyl, Betnovate, Dermovate, Fucibet, Synalar

FOOD SENSITIVITY IN ASTHMA, ECZEMA AND OTHER ALLERGIC DISEASES
In 1995, medical researchers in North Carolina, USA, asked over a hundred dermatologists how they treated atopic eczema. All used standard treatments such as moisturisers and steroid creams, but only 14% mentioned the possible role of food to the parents of children with eczema.
Between them, the dermatologists in this study treated about 17,000 children with atopic eczema per year. Using the most widely accepted estimates for food sensitivity in atopic eczema –38% of eczematous children are sensitive to food – one can calculate that there were over 5000 children in this study area who might perhaps have benefited from avoiding a problem food, but whose parents were never told about this treatment option.
North Carolina is by no means unique. The situation is much the same in other parts of the world, which adds up to millions of children and parents not even being told about a treatment that is frequently effective.
Other allergic diseases (see right) can also be triggered by food, although the percentage of patients affected is much lower than for atopic eczema. Here too, many doctors are unaware of (or sceptical about) the possible role of food.
These reactions are best described as ‘food sensitivity’. They cannot be called food allergy (see p. 62) if there are no symptoms in the mouth or gut and if skin-prick tests are negative – as is often the case. Negative skin tests suggest that the reaction is not IgEmediated (see box on p. 12).
However, in some children with atopic eczema. the skin-prick tests to culprit foods are positive. When these foods are eaten after a period of avoidance, such children sometimes suffer an
immediate reaction, with symptoms typical of true food allergy. For these individuals, their atopic eczema seems to be a symptom of IgE-mediated food allergy.
How can an atopic eczema reaction in response to food be IgE-mediated in one individual and not in another? Research is finally beginning to answer this question (see pp. 18-19).
The allergic conditions that may sometimes be induced, or simply aggravated, by a non-immediate reaction to food are:
• atopic eczema (atopic dermatitis)
• asthma
• perennial allergic rhinitis (constantly blocked or runny nose)
• chronic sinusitis
• secretory otitis media (’glue ear’).
In all of these conditions, many other causes exist. Except in the case of eczema, the other causes are far more likely than sensitivity to food. This fact will weigh heavily with your doctor, whose instinct, quite sensibly, is to look for likely causes first.
Taking asthma as an example, food sensitivity is relatively unusual as a primary cause, whereas allergy to airborne items. such as pollen or house-dust mite, is very common. Food probably affects only 8-10% of asthmatics overall, but is much more important for those with brittle asthma (the most severe and unstable form), affecting as many as 60% in a recent study.
The pollen connection
People who suffer from both birch-pollen allergy and atopic eczema may have worsening eczema when they eat certain fruits and vegetables, e.g. apples and carrots. These same foods cause Oral Allergy Syndrome (see box on p. 63) in some with birch-pollen hayfever, but they can aggravate eczema without causing Oral Allergy Syndrome.
Diagnosis
Consider other likely allergens first. Look at p. 28 for the airborne allergens that could play a part in perennial allergic rhinitis, chronic sinusitis, secretory otitis media (’glue ear’), and asthma. Only in the case of children with atopic eczema is food a prime suspect (between 38% and 69% of children with atopic eczema are affected by food), but even here there are a lot of other factors to consider (see pp. 43-4).
If you do decide to investigate the role of food, don’t abandon basic treatments in the meantime. By neglecting these. you could make the whole problem a great deal worse.
There are various clues that food is at fault:
• If you have other symptoms that suggest food intolerance (see p. 76). These problems often seem to go together with food-induced asthma or rhinitis.
• If you have noticed that a particular food makes your symptoms worse. Where there is intolerance to one food, there could well be intolerance to another, which you have not noticed.
• If you have exercise-induced asthma (see p. 41) and sometimes respond severely to exercise but sometimes have little or no reaction. Sensitivity to a food or foods may be instrumental in changing the response to exercise.
• If you have brittle asthma – but you must get your doctor’s consent for an elimination diet. Foods must be tested under medical supervision as severe life- threatening asthmatic reactions can occur on testing.
• If there are also digestive problems such as diarrhoea, vomiting or belching. This is a strong clue in the case of children with atopic eczema. Symptoms such as diarrhoea frequently precede atopic eczema, and it seems likely that a reaction to food in the gut increases the leakiness of the gut wall, allowing more food molecules through to the blood.
• If there is pronounced eczema around the mouth in children (but this can also be due to constant licking),
• For adults with atopic eczema, if there is a persistent rash on the hands, or the lips. Where there is a blistering rash on the hands that erupts at regular intervals, food is often the problem – or it may be metal contaminants of food such as nickel (see pp. 55-6). In general, food sensitivity is rarer among adults with atopic eczema than it is among children.
Skin-prick tests (see p. 91) for commonly eaten foods are worth
trying in all the diseases – if they give a positive result, they should
be noted, but if they give a negative one, they should be disre-
garded. The many alternative tests being marketed (see p. 93) are
highly inaccurate and unlikely to help.
Research from Tampere University Hospital in Finland suggests that babies are much more likely to give false-negative skin-prick tests for food than older children and adults with atopic eczema. The Finnish researchers found that 52% of babies with atopic eczema give a negative skin-prick test despite having a genuine reaction when tested by food challenge. In an attempt to tackle this problem, they have devised a patch test, similar to those used for contact dermatitis. The patch test, in which food is applied to intact skin and left there for two days, gives false negatives in only 39% of babies.
The best way to detect food-sensitive eczema, according to Dr Erika Isolauri. who heads the Finnish research team, is to use both tests, and take note of a positive reaction to either. This detects 80-90% of eczema-causing food reactions in infants.
Few other doctors are currently using patch tests for atopic eczema; because so much controversy surrounds this topic, and no standardised method has yet been devised. You may be lucky and find a specialist who does these tests.
To confirm the role of particular foods in atopic eczema, a food challenge test is essential, having first avoided the food carefully for two weeks. Great care is needed in testing (see p. 198).
If you cannot get suitable tests done. a simple elimination diet will be needed (see p. 198).
Treatment
There is a choice here, between avoiding the offending food, or eating normally and controlling the symptoms with drugs.
The difficulty comes when parents have to make this decision on behalf of their children. Unfortunately, there is insufficient evidence as regards the consequences of this decision. Treating food sensitivity can reduce the eczema symptoms substantially in the short term, but it does not necessarily improve the long-term prospects for the child. Orthodox doctors tend to think that eating a normal diet is much better for a child nutritionally and socially, and they have a point.
Doctors with a special interest in food sensitivity generally believe that treating the problem at source, rather than just suppressing the symptoms with drugs, must take the pressure off the child’s immune system, and give the child a better chance of growing out of sensitivity reactions in the long run.
The decision is yours – but it is vital that the diet is not more of an encumbrance than the disease itself, and that the child’s interests come first (see pp. 170-71). Whatever you do, don’t allow a child to become malnourished (see p. 198).

Various other things can irritate the skin and make atopic eczema flare up:
• cold weather
• dry air
• long car journeys
• sweating heavily; clothes or shoes that trap sweat may also cause problems
• dust mites, which can act as an irritant, even if not an allergen
• tobacco smoke
• solvents and other chemicals encountered at work
• skin contact with fruit (especially citrus), vegetables, and sometimes other foods. The spray generated by peeling potatoes can even produce eczema on the face.
Anything which increases blood flow through the skin makes the itching worse:
• heat, especially a hot bath or being too hot in bed
• anger or embarassment
• hot drinks of any kind
• coffee, tea and alcohol because of the drug-like substances they contain
• vinegar and spicy foods
• chocolate, soy sauce, yeast extract, orange juice, tomatoes and other foods that are rich in amines (see p. 200).
Various changes in the body can make the eczema worse:
• teething, in babies
• colds and other viral infections
• in women, certain phases of the menstrual cycle.
Many eczema sufferers are aware that their skin gets worse when they are upset, stressed or anxious Oust before examinations, for example). Like other allergic diseases, atopic eczema is not primarily psychological but, once it has begun, psychological factors can play quite a big part.
The good news…
…for children and teenagers, is that if you have eczema as a child, your chances of developing acne during your teens are greatly reduced.
Contact dermatitis too?
People with atopic eczema can develop contact dermatitis (see p. 54) in addition to their existing rash. There is always this risk with regularly applying creams to your skin, especially anything containing fragrance or lanolin. Antihistamine and antibiotic creams also carry this risk.
Even the ingredients in the creams prescribed for eczema – such as moisturisers and steroids – can sometimes provoke contact dermatitis. Creams are more likely to contain sensitising ingredients than ointments. Very occasionally, the sensitivity is to a preservative or emulsifier that is widely used in different ointments and creams, which means that switching brands yields no improvement. Steroid suspended in petrolatum (white paraffin jelly) is the least likely to cause reactions.
The rash produced by contact dermatitis looks no different from atopic eczema, so this sensitivity will be far from obvious. It will just seem as though the atopic eczema is not getting better.
Talk to your doctor if you think there may be a problem of this kind. He or she can check by using the suspect cream on one side of the body, and a different-but-equivalent product on the other side. Patch tests (see p. 92) may also help to identify contact sensitivity.
Diagnosis
There are five separate aspects to diagnosis:
1 Is this really atopic eczema? There are no clear-cut tests for atopic eczema. Instead the diagnosis is based on a ‘points system’ – how many of the typical features of atopic eczema are present? The doctor adds them up, and if there are enough, then it’s atopic eczema. Sometimes all the typical features are there and this is obviously the right diagnosis, but in other cases there may be room for doubt. The doctor should rule out the possibility of contact
dermatitis (see p. 54), especially if you have eczema only, or mainly, on the hands.
2 What avoidable irritants are making the skin worse?
3 Is the eczematous skin infected? The signs of infection are usually clear, but not always, especially with fungal infections. Steroid creams can sometimes mask the overt signs of infections: if atopic eczema is not responding to treatment this possibility should be investigated.
4 Are there any allergic reactions to those infections? Or to the normally harmless microbes that live naturally on the skin (see p. 17)? Skin-prick tests or blood tests can reveal such allergic reactions where fungi are concerned. Adults with persistent atopic, eczema which is getting worse rather than better are the most likely candidates.
5 Are there allergic reactions (or other sensitivity reactions) to food, or to allergens such as house-dust mite?
This fifth aspect of diagnosis is where controversy is rife. Many dermatologists feel that atopic eczema is treated quite adequately with moisturisers (emollients) and steroid creams. The search for allergic/sensitivity reactions – in other words, for basic causes – seems unnecessary for most patients, or more trouble than it is worth. Indeed, some dermatologists believe that looking for such sensitivity reactions is actually mistaken because they are not basic causes (see p. 42).
Other specialists disagree, and feel that allergic/sensitivity reactions are a basic causative factor in atopic eczema. They concede that there are many false positives, but in their opinion, there are enough true positives in the skin-prick test results to make it worth sorting them out from the false positives. Except for patients with very mild eczema, such doctors prefer to identify and eliminate the root causes, if possible.
Patch tests are now used by some of these doctors (see p. 69) – yet another contentious issue! The time-honoured use for patch tests is in contact dermatitis, and there is a lot of resistance to using them for atopic eczema. Traditionally, the immune reactions involved in atopic eczema and contact dermatitis are seen as entirely different – the former involving IgE and being a quick reaction (identified by skin-prick tests), the latter involving other players and
Sweaty sock dermatitis
More correctly known as ‘juvenile plantar dermatitis’, this rash on the feet affects an awful lot of atopic children. It is frequently misdiagnosed as athlete’s foot, and treated with anti-fungal drugs. The important clue can be found by looking between the toes: if there’s no rash there, then it is not athlete’s foot.
being much slower (identified by patch tests). New research into atopic eczema shows this view to be overly simple (see pp. 18-19) – and it provides a rational basis for using patch tests.
If, as a patient or a parent, you are keen to search for fundamental causes, remember that this should never displace treatments to quell infection or moisturise the skin and restore its protective structure. When these treatments are neglected the whole problem can get far worse, because of the vicious circles that sustain atopic eczema.
Treatment
Treatment for atopic eczema has five possible angles:
1 calming the inflammation
2 avoidance of scratching and rubbing
3 caring for the skin and restoring its normal structure
4 treating infections
5 avoiding allergens.
One or more of these aspects may be neglected, depending on what kind of specialist you are seeing.
Calming the inflammation
Steroid creams are the mainstay of atopic eczema treatment because they calm the inflammation in the skin. The creams do carry a risk of side effects, but are safe when used correctly (see p. 147). An over-fearful attitude to steroids creams can mean that the eczema never gets under control, and this can mean using more steroids in the long run. When treating an outbreak of atopic eczema with steroid cream, it is vital to continue applying the cream until the ‘hidden healing’ has occurred (see p. 146) – don’t stop as soon as the skin looks better.
Promising alternatives to steroid creams now exist: these are tacrolimus and pimecrolimus ointments (see p. 147). Unfortunately they are much more expensive, and your doctor will probably prescribe them only if there is some pressing reason.
Tar-based ointments have a much milder anti-inflammatory effect, and can be helpful for areas of thickened skin. They were once widely used for atopic eczema, but are used less now, in part because they stain fabrics and smell unpleasant. Sometimes they irritate the skin, too, and there are concerns about safety: they contain carcinogens, and significant amounts are absorbed into the bloodstream. However no evidence has been found that these cause cancer, despite intensive searching.
Antihistamine tablets are sometimes used and while they
may not help the eczema much, some evidence suggests that
they could reduce the risk of asthma developing later (see p. 249).
Powerful drugs such as cyclosporin are sometimes used in
severe cases of atopic eczema, to damp down the immune
response. They are taken by mouth, and can affect other parts of the body, not just the skin. Very careful monitoring is needed.
Sunlight is often beneficial, because it suppresses the inflammatory processes in the skin. However, not everyone improves with sun exposure – some get worse. Careful experimentation is the only way to find out: build up the length of sun exposure very gradually, starting with less than an hour a day.
Medical treatment with UV (ultraviolet) light can produce the same effect as sunshine and suppress inflammation. This treatment may be prescribed, but you should not try it for yourself with a sun-lamp. In PUVA treatment, a plant-derived substance called psoralen is given by mouth, or applied to the skin, to enhance the response to UV light.
Kicking the scratching habit
Scratching is a substantial part of the problem in long-standing atopic eczema. Experiments with healthy people and mechanical ’scratching machines’ show that perfectly normal skin will erupt into eczema if it is scratched intensively.
There is no steroid cream powerful enough to counteract the effects of scratching. But if scratching stops, then the skin can –with the help of medication – heal up.
Note that ’scratching’, in this case, includes rubbing the itch (directly or through clothes; using a hand, wrist, chin, leg, foot, or any other part of the body), touching or picking at the skin, rubbing against sheets, furniture or another person, or using a towel, flannel or hairbrush to rub the skin. All these activities can be habitual and quite unconscious, if atopic eczema has been present for more than a few months – you just don’t realise you’re doing it most of the time.
For many with atopic eczema, another problem creeps in –scratching without itching. This may be just habit, a response to boredom, stress or anxiety, or even part of the family dynamics, in which scratching has become a form of emotional expression. Scratching alone can set off itching, and a scratch-itch-scratch cycle ensues.
The first step in combating scratching (for an adult or older child) is simply to notice how often scratching occurs. Doctors at the Chelsea and Westminster Hospital in London issue their patients with little hand-held counting devices (tally-counters), and ask them to press the button on the device every time they scratch or rub. Over a period of days, patients discover – usually to their own amazement – just how often they do scratch. The point of the exercise is simply to become conscious of the scratching impulse, and to notice the situations which typically provoke scratching. You could use a small pocket-sized notebook and pencil to achieve the same end.
Once this awareness has been gained, then you are in a position to break the scratching habit. The methods involved –called ‘habit reversal’ – were first developed by a Swedish dermatologist, Peter Noren. It takes about 2-4 weeks for most people, but the change is long-lasting. Most eczema sufferers find that they recoup their time investment rapidly, once they are free from the chore of dealing with chronic eczema.
When you notice that you are about to start scratching, and before the urge to scratch overwhelms you, take control and do something deliberate with your hands – for example, clench your fists, while breathing deeply and slowly. Think cool non-itchy thoughts. The urge to scratch may pass. If it doesn’t, then you can allay the itch by pinching the itchy area gently, or pressing your fingernail into it, or lightly applying a little moisturiser.
In the bath or shower, don’t use flannels, and never rub or scrub the skin. Dry off by gently patting with a soft towel.
The aim is to get scratching episodes down to fewer than ten per day. In achieving this goal, relaxation exercises, stress management techniques, hypnotherapy or autogenic training (see p. 222) can also be very helpful, especially if you sometimes scratch in tense situations.
With small children, the parents have to do the noticing. Most are unaware just how much their child scratches or rubs the eczema – babies often rub against the side of the cot.
Once the awareness is there, a child over four can usually be taught the habit-reversal technique described above. With a younger child, the parents must distract the child when scratching is imminent, by talking or playing. If the child is scratching while asleep, parents should pick the child up and, very gently, hold the child’s hands away from the body. Situations and activities which commonly provoke scratching should be avoided, or planned for. Give the child something to hold while dressing and undressing, for example – keep the hands busy. But never say ‘Don’t scratch’ – it usually has the opposite effect in the long run.
For the first four days and nights, while you are trying to break the scratching habit, the child should never be alone, even for a minute – someone who is able to distract the child from scratching should always be there, and awake. Fortunately, children lose the habit far more quickly than adults.
Keep a child’s fingernails very short, and smooth them with an emery board too, so that if any scratching does occur the effects are minimised. (Soft cotton mittens, to be worn at night, are often recommended, but the cotton itself can be used to rub the skin – observe your child carefully! The same is true of all-over cotton suits.)
For this anti-scratching programme to be effective in healing the skin, there must be a determined effort with drug treatment at
Will it clear up?
Small children with eczema generally grow out of it by the age of two. Those who have eczema after this age tend to show a big improvement at puberty. Sometimes, however, the eczema can disappear at puberty, only to reappear later: so continue to be careful with your skin.
Atopic eczema is frequently the first sign of a tendency to allergies (see p. 22). Given this early warning sign, parents should take steps to avoid allergies developing, or at least reduce their severity (see pp. 244-9). One small piece of good cheer: atopic eczema and life-threatening food allergies are very rarely found together.
People with both asthma and atopic eczema frequently notice that when one improves the other seems to get worse. There is no explanation for this as yet.
Moisturisers - how to use them
Moisturisers (emollients) do two things: they increase the amount of water in the skin, and they lubricate the skin, making it less brittle.
A moisturiser is designed to leave an oily layer on the surface of the skin which stops the skin’s natural moisture from escaping. The most effective preparations, from this point of view, are ointments made from white paraffin, such as Vaseline, which form an uninterrupted waterproof layer: these are sometimes called occlusives. They contain no water, unlike creams. Although a cream forms a less formidable barrier to the escape of moisture from the skin, it does provide some moisture itself, which can soak into the skin.
The most important thing is to have something that you like using, so that you apply it regularly. There are lots of moisturisers available, so ask the doctor for different ones to try.
Applying moisturiser well is crucial:
• Apply moisturiser before your skin gets dry, as a preventive treatment.
• There’s no need to rub in your moisturiser (this can be a form of scratching). Just apply it very lightly.
• A thin layer is all that’s needed. A thick layer keeps in heat which aggravates the skin.
• Always apply within three minutes of a bath or shower.
• In addition, apply every 3-4 hours during the day. Carrying moisturiser around with you is helpful – get a small tube of moisturiser for this purpose.
• Ask the doctor to prescribe moisturiser in large quantities, to make sure you have enough. But beware of infecting big pots with Staphylococcus bacteria and then reinfecting your skin. Pump-action dispensers are safer.
Moisturiser can also be smeared onto bandages which are then wound around the affected areas at night to reduce the itch – or you can use ready-made ‘wet-wraps’ (ask your doctor about these). As long as the bandages/wraps are immovable, they will reduce nocturnal rubbing and scratching.
Avoid lotions, and any non-prescribed creams, as they could be irritating to the skin. Choose bath oils with care – some contain alcohol which is an irritant.
the same time. You should be using a steroid cream of sufficient strength, twice a day, and plenty of moisturising treatment.
By taking this ‘Combined Approach’, as Dr Christopher Bridgett and his colleages at the Chelsea and Westminster Hospital call it, you should be able to clear the eczema completely, even if you have had it for years and have tried innumerable different treatments. Once this has been achieved, you can maintain an eczema-free state by watching carefully for any outbreaks of itching, redness or roughness, and treating them immediately with a short course of steroid cream (see p. 146).
Skin care
Firstly, avoid all the irritants which you think may affect your skin. Give clothes an extra rinse cycle in the washing machine, to remove all detergent. or use a non-detergent system such as Eco-balls or Aquaballs. Wash all new clothes before wearing them, to remove chemicals such as formaldehyde. Wear soft cotton or silk next to the skin.
Where eczema affects the hands, special care is needed (see p. 57).
Water can be both good and bad for eczema. When you soak in a bath, water is absorbed by the skin cells, which helps correct the dryness of the skin. But when you get out of the bath, and the skin dries, the outermost layer shrinks and develops microscopic cracks, making it even less waterproof than it was before. The way around this is to apply a moisturiser immediately after a bath or shower –gently pat the skin until partially dry, and apply the moisturiser immediately to trap the water in the skin.
For anyone with a severe flare of eczema, current recommendations are:
• soak in lukewarm water for 20 minutes, twice a day
• pat dry
• quickly apply steroid cream to the eczematous areas, then moisturiser over the top, and to all other dry-skin areas
• make sure the moisturiser goes on within 3 minutes of emerging from the water.
This works well for some people, but not all. For a few eczema sufferers, the effect of taking natural oils out of the skin (which soaking does, to some extent) may outweigh the benefits of putting water in. Or they could be sensitive to something in the tap water – the chlorine, perhaps, or pollutants. It may not be obvious that this routine treatment is not helping. As Dr Michael Tettenborn, a British paediatrician with long experience of atopic eczema, observes: ‘By the time they’re referred to me, children are usually on the standard regimen of two-soaks-a-day. One of the first things I do, as an experiment, is tell the parents to just bathe them once a week and use a moisturiser and tissues to keep them clean the rest of the time. Some children do a lot better after that.